Question

A tower on the bank of a river is 20 m high and the angle of elevation of the top of the tower
from the opposite bank is 30°. Find the breadth of the river.​

Answer 1

Answer:

As the angle ofnelevation is to opposite bank of rirver,we can know the breadth by knowing the base,

We know the perpendicular,that is tower=20m

now,angle theta=30°

as we know perpendicular,and want to know base from perpendicular,we will use tantheta

now,tan30=P/B=1/√3=P/20m

1/√3=P/20m

cross multiply,

√3P=20

P=20/√3m

Answer 2

Answer:3434.64

Step-by-step explanatio

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